[c-nsp] OSPF, load balancing

[Paolo Losi]

Rodney Dunn wrote:
> There are all kinds of hacks we could probably come up with and
> some are uglier than others.
> 
> It all depends on what your tolerance is. :)

Well, we are already using a hack!
We were looking for a better one :-)

> You coul do NAT on the outside interface and then only route traffic
> back to that ip address over the upper path for example.
> 
> Similar to what is done for dual ISP connections. The shortest IGP
> path back to the address you NAT to would force it to be symmetrical.

That is clear. using NAT is not feasible. There is flowing traffic
of customers with static ip already assigned.

> No easy way wit OSPF in an equal path scenario to direct the traffic
> one way vs. the other.
> 
> Let me ask the OER folks. I thought they were working on something
> at one point that would actually fix this.


Thanks!
Paolo